Brian Waters' status still in question

The New England Patriots began training camp Thursday, but the status of guard Brian Waters remains a mystery.

Patriots coach Bill Belichick addressed the media and said the situation is still "day-to-day." Waters has not participated in any offseason workouts and will not practice for the start of training camp. Neither the team nor Waters have been clear on the reason. But it's been speculated that Waters, 35, might be contemplating retirement.

The Patriots could have major changes at guard to start the season. In addition to Waters' uncertain status, fellow Patriots starting guard Logan Mankins is on the active/physically unable to perform list following offseason ACL surgery.